Mona Lisa? Is this your idea of a clever quip?
You compare a an oil painting to the historic American scientific exploration of another planet, using spacecraft and surface remote controlled vehicles that are the envy of the world, that returned volumes of scientific data, images and discoveries that enabled other mission to mars and beyond.
The brownish gray sky at sunset as it would be seen by an observer on Mars - true color mosaic taken by Mars Pathfinder on sol 24 (June 22, 1996) The sky near the sun is a pale blue color. (NASA/JPL)